SOLUTION: can anyone help me with this factoring algebra problem a^4+a^3-72a^2

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Question 209271: can anyone help me with this factoring algebra problem
a^4+a^3-72a^2
Answer by RAY100(1637) About Me  (Show Source):
You can put this solution on YOUR website!
a^4 +a^3 -72a^2
.
a^2( a^2 +a -72)
.
a*a*(a+9)(a-8)
.